I would like to find out at runtime if an object is a descendant of a certain object. Is there any way to do this? The TypeOf function can be used to find out if an object _is_ of a certain type but not if an object is a descendant of an object.
If there is no way to do this (easily), maybe it would be a good idea to add such a function?

Any help would be greatly appreciated.

Best wishes,

Marcel

This is only available for classes (using the inheritsfrom() method), not for objects.

PS: don't use typeof() on classes, it returns bogus results there. Use the "is" operator instead for classes. The compiler still needs to be fixed so it rejects typeof() applied to classes, since it only works on TP-style objects.

Jonas

For classes you can use the 'is' function:

If TSomeClass is  TSomeOtherClass then
  ..

I am not sure whether it is possible for objects also.

Michael.

or, somewhat more readable in my opinion:

  if x.InheritsFrom(y) then
     ...

- Sebastian

Thanks a lot for your answers.

A guess that gives me another reason to start using classes instead of objects ;-).

Marcel